Crimson dragons dwell in the lairs of other dragons they have either killed or kicked out. Their lairs can be any kind of place but they mostly prefer mountainous caves with a little water. A crimson dragon’s lair is a dismal cave, grotto, or ruin that is in or very, very near mountain bases or peaks. The lair is littered with the blood stained bones of previous victims and the fly-ridden carcasses of fresh kills, watched over by crumbling statues. Centipedes, scorpions, and snakes infest the lair, which is filled with the stench of death, decay, and the metallic scent of fresh blood.

Lair Actions(Preferred area)

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:

• Freshly killed bodies that the dragon can see within 120 feet of it are reanimated but not like necromancy. these bodies seem to be like puppets controlled by a puppet master. these bodies act as separate enemies. each attack made by one of these "puppets" deals necrotic or poison damage.
• the statues around the lair are very fragile and can crumble which will cause anyone in the vicinity (not including the dragon) to roll a dex saving throw and a fail will cause them to be knocked prone and successful save throw to take 20 damage
• A cloud of swarming insects fills a 20-foot-radius sphere centered on a point the dragon chooses within 120 feet of it. The cloud spreads around corners and remains until the dragon dismisses it as an action, uses this lair action again, or dies. The cloud is lightly obscured. Any creature in the cloud when it appears must make on a DC 15 Constitution saving throw, taking 10 (3d6) piercing damage on a failed save, or half as much damage on a successful one. A creature that ends its turn in the cloud takes 10 (3d6) piercing damage.
• Magical darkness spreads from a point the dragon chooses within 60 feet of it, filling a 15-foot-radius sphere until the dragon dismisses it as an action, uses this lair action again, or dies. The darkness spreads around corners. A creature with darkvision can’t see through this darkness, and nonmagical light can’t illuminate it. If any of the effect’s area overlaps with an area of light created by a spell of 2nd level or lower, the spell that created the light is dispelled.

Regional Effects

The region containing a legendary black dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:

• The land within 6 miles of the lair takes twice as long as normal to traverse, since the mountains they(crimson dragons) typically live in are of rough terrain.
• Water sources within 1 mile of the lair are contaminated from the dragons cursed blood. Enemies of the dragon that drink such water regurgitate it within minutes. and take 1d4 necrotic damage

If the dragon dies, terrain remains as it has been, but other effects fade over 1d10 days.